Since no one cared to help last time I posted this Pls help, also explain to me how this works and how to do this I have no idea what all of this is

throw the computer

step-by-step explanation:

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.